A version of Jay-Z’s “Venus vs. Mars” surfaced last week featuring vocals from Cassie. But when the album version leaked this week, the Bad Girl had been replaced by Mrs. Carter on the hook. To make matters more confusing, only Cassie is credited in The Blueprint 3 liner notes, seen below.

This is not the first time Cassie has appeared on a Jay-Z record. She can also be heard on “Roc Boys (And the Winner Is…).” Listen to both ladies’ versions of “Venus vs. Mars” after the cut.